Abyssal mountains

Abyssal mountains – Mountains on the seafloor at abyssal depths having a vertical relief of greater than 1,000 m within a search radius of ~25 km are termed “abyssl mountains” (Harris et al., 2014). They include discrete guyots, seamounts, ridges (classes that are superimposed over “mountains”) and other positive relief features.

Abyssal classification categories (after Harris et al., 2014). The percentage areas first line refers to percentage of ocean basin area and the second line (in brackets) refers to percentage of abyssal area.